Website cleanup: remove docs, cookies, accessibility fixes, package upgrades (#547)

- Remove docs section (/docs routes, content, sidebar, doc components)
- Remove sidebar:state cookie
- Add Microsoft Privacy Statement link to footer
- Accessibility fixes (WCAG compliance): aria-hidden on decorative
icons, new tab warnings on external links, role=status/alert on
loading/error, semantic main landmark, nav landmarks in footer,
aria-busy on skeletons
- Upgrade packages to latest compatible versions
- Migrate lucide-svelte v1 (Github brand icon to inline SVG)
- Remove unused packages (shiki, flexsearch, mdsvex, adapter-cloudflare,
adapter-static)
- Clean up svelte.config.js and utils.ts

---------

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MaanavD <24942306+MaanavD@users.noreply.github.com>

Author: MaanavD

www/package-lock.json

@@ -25,37 +25,32 @@
 		"lint": "prettier --check ."
 	},
 	"devDependencies": {
-		"@sveltejs/adapter-cloudflare": "^7.2.4",
-		"@sveltejs/adapter-static": "^3.0.10",
-		"@sveltejs/adapter-vercel": "^6.2.0",
-		"@sveltejs/kit": "^2.49.2",
+		"@sveltejs/adapter-vercel": "^6.3.3",
+		"@sveltejs/kit": "^2.55.0",
 		"@sveltejs/vite-plugin-svelte": "^6.2.1",
-		"@tailwindcss/postcss": "^4.1.17",
+		"@tailwindcss/postcss": "^4.2.2",
 		"@tailwindcss/typography": "^0.5.19",
-		"autoprefixer": "^10.4.22",
-		"bits-ui": "^2.14.4",
+		"autoprefixer": "^10.4.27",
+		"bits-ui": "^2.16.3",
 		"clsx": "^2.1.1",
 		"cmdk-sv": "^0.0.19",
-		"lucide-svelte": "^0.556.0",
+		"lucide-svelte": "^1.0.1",
 		"mode-watcher": "^1.1.0",
-		"prettier": "^3.7.4",
-		"prettier-plugin-svelte": "^3.4.0",
+		"prettier": "^3.8.1",
+		"prettier-plugin-svelte": "^3.5.1",
 		"prettier-plugin-tailwindcss": "^0.7.2",
-		"shiki": "^3.19.0",
-		"svelte": "^5.53.5",
-		"svelte-check": "^4.3.4",
-		"svelte-sonner": "^1.0.7",
-		"tailwind-merge": "^3.4.0",
+		"svelte": "^5.55.0",
+		"svelte-check": "^4.4.5",
+		"svelte-sonner": "^1.1.0",
+		"tailwind-merge": "^3.5.0",
 		"tailwind-variants": "^3.2.2",
-		"tailwindcss": "^4.1.17",
+		"tailwindcss": "^4.2.2",
 		"tailwindcss-animate": "^1.0.7",
 		"typescript": "^5.9.3",
 		"vite": "^7.2.7"
 	},
 	"dependencies": {
-		"@vercel/analytics": "^1.6.1",
-		"flexsearch": "^0.8.212",
-		"mdsvex": "^0.12.6"
+		"@vercel/analytics": "^2.0.1"
 	},
 	"keywords": [
 		"microsoft",
@@ -64,8 +59,7 @@
 		"foundry",
 		"local",
 		"machine learning",
-		"llm",
-		"documentation"
+		"llm"
 	]
 }